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The catalytic stability and reusability of Ru/rod-CeO2-MgO

https://doi.org/10.1016/j.fuel.2022.123420

“The catalytic stability and reusability of Ru/rod-CeO2-MgO combined materials in ICCM were also investigated in this work. As shown in Fig. 8, it is interesting that the capacity of CO2 desorption decreases from 58.5 to 5.3 μmol/gDFM after 9 cycles, whilst the CH4 yield only decrease ∼ 20% (from 0.34 to 0.27 mmol/gDFM). Furthermore, the catalytic performance of Ru/rod-CeO2-MgO for ICCM stabilizes after 5 cycles with > 95% CO2 conversion using 5% H2/N2, which outperforms the state-of-the-art conventional CO2 methanation (<70% for CO2 conversion at 300 °C using concentrated CO2 and H2) over Ru-based catalysts [43][56][57].”

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Fig. 8. ICCM cycle evaluation of Ru/rod-CeO2-MgO combined materials.”

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